2 Answers

NebulaFox · Answer 1 · 2021-04-10T05:48:24+0000

There would always be energy lost as heat or sound. That means output energy can never be equal to input energy so efficiency will always be less than 100%

Jenti Dabhi · Answer 2 · 2021-04-13T07:15:27+0000

Answer:

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Step-by-step explanation:

Efficiency of a lever is never 100% or more because no machine is friction free and due to friction , some of the input energy is wasted in the form of heat energy.

Hope I helped!

Best regards! :D

~TheAnimeGirl

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